Bisby studies

The synergistic effect observed in the presence of all three antioxidants implies that there is an interaction between the individual antioxidant components. The direct interaction of the a-tocopherol radical and ascorbic acid is already well established (Bisby and Parker 1995) and a study by Mayne and Parker (1989) on chicks deficient in vitamin E and selenium showed that the... 

A few sulfonated bidentate ligands have been used for which the coordination behavior has been well established for their nonsulfonated analogs the sulfonated ligands showed a behavior that was very much the same as that of their parent ligands in organic solvents. NAPHOS as in rhodium complex (127) behaves the same as BISBI (58), as does its sulfonated analog BINAS (128), which was developed and extensively studied by Herrmann and co-workers.410"413 The catalytically active rhodium complexes [HRh(CO)2(P-P)] of NAPHOS and BINAS have been characterized by IR and NMR spectroscopy.414... 

Results with different ligands and substrates [7, 23] are summarized in Table 1. Investigation of the bidentate chelates DIPHOS LI, BISBI L2, and NAPHOS LIO (cf. structures in Scheme 3) has been invigorated by a previous study with contradictory experimental and theoretical results [22]. 

Fire tests on FRP-reinforced or strengthened concrete Recent fire tests and numerical studies on FRP-reinforced beams and slabs have been performed in North America (Kodur and Baingo 1998, Saafi 2002, Kodur and Bisby 2005) and the United Kingdom (Abbasi and Hogg... 

R.H. Bisby, R.B. Cundall, G.E. Adams, and M.L. Posener FREE RADICAL REACTIONS WITH PEPSIN STUDIED BY PULSE RADIOLYSIS... 

Bisby RH, Parker AW (1991) Reactions of the a-tocopheroxyl radical in micellaer solutions studied by nanosecond laser flash photolysis. FEBS Lett 290 205-208... 

Followed by an early report from an industrial laboratory, much work was carried out with chelating phosphines such as BISBI andXantphos. These ligands when tested for the hydroformylation of 1-hexene or 1-octene were found to give the linear aldehydes with high regioselec-tivity. NMR studies have shown that for 534, structural isomerism as shown by reaction 5.2.2.2 exists. 

The solution structures of such selective catalysts have been studied and most Hkely the active species HRh(L-L)(CO)2 all contain the bidentate phosphite in the equatorial plane (stmcture De.e in Scheme 9.1) [38], especially bulky ligands lead to high l/b ratios [39]. The reverse is not true - not all bis-equatorial complexes are selective catalysts for making Hnear aldehyde The bisphenol backbone is usually highly effective it is the same stractural motif as that of BISBI... 

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